| Houston to Norton Shores (Michigan) | 1,052.87 mi (1,694.43 km) |
| Houston to Norwalk (California) | 1,359.07 mi (2,187.22 km) |
| Houston to Norwalk (Connecticut) | 1,456.85 mi (2,344.57 km) |
| Houston to Norwalk (Iowa) | 814.18 mi (1,310.30 km) |
| Houston to Norwalk (Ohio) | 1,066.89 mi (1,716.99 km) |
| Houston to Norwich (Connecticut) | 1,532.24 mi (2,465.90 km) |
| Houston to Norwood (Ohio) | 897.23 mi (1,443.94 km) |
| Houston to Novato (California) | 1,652.39 mi (2,659.26 km) |
| Houston to Novi (Michigan) | 1,097.61 mi (1,766.44 km) |
| Houston to O'Fallon (Illinois) | 684.12 mi (1,100.99 km) |
| Houston to O'Fallon (Missouri) | 676.27 mi (1,088.35 km) |
| Houston to Oak Creek (Wisconsin) | 995.06 mi (1,601.40 km) |
| Houston to Oak Forest (Illinois) | 921.26 mi (1,482.63 km) |
| Houston to Oak Grove (Oregon) | 1,826.59 mi (2,939.61 km) |
| Houston to Oak Grove (South Carolina) | 883.38 mi (1,421.67 km) |
